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Pathfinder: Allow custom climbable node

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This commit is contained in:
Wuzzy 2024-04-03 18:51:59 +02:00
parent 69cda93705
commit dd863a16fd
2 changed files with 13 additions and 9 deletions
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3
mods/rp_pathfinder/API.md
View File

@ -41,6 +41,9 @@ restrictions and does not cut corners.
* `handler_blocking`: A function that takes a node table and returns * `handler_blocking`: A function that takes a node table and returns
true if the node shall block the path true if the node shall block the path
(default: same as `handler_walkable`) (default: same as `handler_walkable`)
* `handler_climbable`: A function that takes a node table and returns
true if the node is considered climable
(default: if `climbing` field of node is true)
* `use_vmanip`: If true, nodes will be queried using a LuaVoxelManip; * `use_vmanip`: If true, nodes will be queried using a LuaVoxelManip;
otherwise, `minetest.get_node` will be used. Required for async otherwise, `minetest.get_node` will be used. Required for async
usage. usage.

19
mods/rp_pathfinder/init.lua
View File

@ -22,7 +22,7 @@ local blocking_default = walkable_default
-- * 1: Check if can climb up (no 'disable_jump' group) -- * 1: Check if can climb up (no 'disable_jump' group)
-- * -1: Check if can climb down (no 'disable_descend' group) -- * -1: Check if can climb down (no 'disable_descend' group)
-- * nil: Ignore climb restrictions -- * nil: Ignore climb restrictions
local function climbable(node, dir) local function climbable_default(node, dir)
local def = minetest.registered_nodes[node.name] local def = minetest.registered_nodes[node.name]
if not def then if not def then
return false return false
@ -117,7 +117,7 @@ end
-- and returns the final node we land *in* -- and returns the final node we land *in*
local function drop_down(pos, drop_height, stop_at_climb, nh, get_node) local function drop_down(pos, drop_height, stop_at_climb, nh, get_node)
local stop = function(node) local stop = function(node)
return nh.blocking(node) or nh.walkable(node) or (stop_at_climb and climbable(node)) return nh.blocking(node) or nh.walkable(node) or (stop_at_climb and nh.climbable(node))
end end
local dpos = table.copy(pos) local dpos = table.copy(pos)
-- Get the first blocking or walkable node below neighbor -- Get the first blocking or walkable node below neighbor
@ -148,13 +148,13 @@ local function get_neighbor_floor_pos(neighbor_pos, current_pos, clear_height, j
-- Climb -- Climb
if climb then if climb then
-- If neighbor is climbable -- If neighbor is climbable
if climbable(nnode) and not nh.blocking(nnode) then if nh.climbable(nnode) and not nh.blocking(nnode) then
return npos return npos
-- If node *below* neighbor is climbable -- If node *below* neighbor is climbable
elseif not nh.blocking(nnode) then elseif not nh.blocking(nnode) then
local bpos = vector.offset(npos, 0, -1, 0) local bpos = vector.offset(npos, 0, -1, 0)
local bnode = get_node(bpos) local bnode = get_node(bpos)
if climbable(bnode) and not nh.blocking(bnode) then if nh.climbable(bnode) and not nh.blocking(bnode) then
return npos return npos
end end
end end
@ -286,6 +286,7 @@ function rp_pathfinder.find_path(pos1, pos2, searchdistance, options, timeout)
local nh = { local nh = {
walkable = options.handler_walkable or walkable_default, walkable = options.handler_walkable or walkable_default,
blocking = options.handler_blocking or blocking_default, blocking = options.handler_blocking or blocking_default,
climbable = options.handler_climbable or climbable_default,
} }
local get_node local get_node
if options.use_vmanip then if options.use_vmanip then
@ -398,11 +399,11 @@ function rp_pathfinder.find_path(pos1, pos2, searchdistance, options, timeout)
if climb then if climb then
current_neighbor_dirs = table.copy(neighbor_dirs) current_neighbor_dirs = table.copy(neighbor_dirs)
if respect_climb_restrictions then if respect_climb_restrictions then
if climbable(current_node) then if nh.climbable(current_node) then
if climbable(current_node, 1) then if nh.climbable(current_node, 1) then
table.insert(current_neighbor_dirs, {x=0,y=1,z=0}) table.insert(current_neighbor_dirs, {x=0,y=1,z=0})
end end
if climbable(current_node, -1) then if nh.climbable(current_node, -1) then
table.insert(current_neighbor_dirs, {x=0,y=-1,z=0}) table.insert(current_neighbor_dirs, {x=0,y=-1,z=0})
end end
current_max_jump = 0 current_max_jump = 0
@ -410,7 +411,7 @@ function rp_pathfinder.find_path(pos1, pos2, searchdistance, options, timeout)
table.insert(current_neighbor_dirs, {x=0,y=-1,z=0}) table.insert(current_neighbor_dirs, {x=0,y=-1,z=0})
end end
else else
if climbable(current_node) then if nh.climbable(current_node) then
table.insert(current_neighbor_dirs, {x=0,y=1,z=0}) table.insert(current_neighbor_dirs, {x=0,y=1,z=0})
current_max_jump = 0 current_max_jump = 0
end end
@ -420,7 +421,7 @@ function rp_pathfinder.find_path(pos1, pos2, searchdistance, options, timeout)
if current_max_jump > 0 then if current_max_jump > 0 then
local below_pos = vector.offset(current_pos, 0, -1, 0) local below_pos = vector.offset(current_pos, 0, -1, 0)
local below_node = get_node(below_pos) local below_node = get_node(below_pos)
if climbable(below_node) then if nh.climbable(below_node) then
current_max_jump = 0 current_max_jump = 0
end end
end end